The Earth's rate of rotation is slowing at a rate of about 17 milliseconds a century. The length of a day for the dinosaurs was closer to 22 hours

On Saturn's moon Titan, gravity is so low and the atmosphere is so thick that humans could fly by flapping arms like wings

Windy planet

There is a black hole at the center of most galaxies

A single day on Venus is longer than an entire year on Earth

Light from the sun takes 8 minutes to reach Earth, so you see the sun as it was 8 minutes ago